What configuration should the aircraft be in for a stabilized approach?

A stabilized approach is a crucial component of a safe landing sequence in aviation. For the aircraft to be in the correct configuration during a stabilized approach, it should be in an approved landing configuration with the correct airspeed. This includes having the landing gear down and extended, appropriate flap settings, and speed that ensures a safe margin above stall speed while still maintaining control and precision in descent.

The approved landing configuration typically means that the aircraft is set up for landing as per the manufacturer's specifications. This includes establishing the right angle of attack, landing gear position, and flap settings, which all contribute to achieving the optimal lift and drag characteristics necessary for landing.

Having the correct speed in conjunction with the approved configuration enhances the pilot's ability to control the aircraft and to make any necessary adjustments right up until touchdown. The very nature of a stabilized approach focuses on maintaining a consistent glide path, aligning with the runway, and ensuring that the aircraft is appropriately configured to respond to any changes in conditions or requirements during the final approach.

The other configurations outlined would not provide the necessary safety or control required for a successful landing, as they either involve inappropriate gear settings, speeds, or a lack of specific requirements that are central to a stabilized landing approach.